Comprehensive exploration method for concealed leakage channel of ionic rare earth mine

Abstract

The invention discloses a comprehensive exploration method for a concealed leakage channel of ionic rare earth mine, and aims at the current situation that the concealed leakage channels of ionic rare earth mine widely exist. The method sequentially comprises the steps of geophysical exploration interpretation, geophysical prospecting feature area geological drilling, drilling rock-soil testing and hydrogeological testing, geophysical constraint inversion, geologic model and underground water seepage model establishment, in-situ leaching mining simulation and concealed leakage channel delineation, finally, precise delineation of the concealed leakage channel in the mining area mining range, and visual displaying of the process that the immersion liquid migrates and diffuses from the hidden leakage channel through the three-dimensional model. According to the method, the mechanical drilling workload is effectively reduced, the working efficiency is improved, and the geological environment of a mining area is slightly damaged; basic data support is provided for design and construction of pollution prevention and control facilities in the ion type rare earth ore in-situ leaching mining process, and ecological green and sustainable mine construction is facilitated.

Description

technical field [0001] The invention belongs to the technical field of in-situ leaching and mining of ion-type rare earths, and in particular relates to a comprehensive investigation method for concealed seepage channels before in-situ leaching and mining of ionic rare earth ores. Background technique [0002] Ionic rare earths were first discovered and named in my country in 1969. They are rare earth deposits dominated by heavy rare earth elements and are an important part of global rare earth resources. Widely distributed in South China, rare earth ions are adsorbed in the form of ions on clay minerals such as kaolin, montmorillonite, and illite, and can be washed out with electrolytes such as sodium chloride, ammonium sulfate, and magnesium sulfate. [0003] At present, ionic rare earths are mainly mined by in-situ leaching, which is a mining method in which electrolyte solution is injected into the rare earth ore layer through the liquid injection hole, rare earth ions a...

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Problems solved by technology

[0006] The present invention aims to solve the resource and environment problems caused by concealed underground seepage passages in the in-situ leaching mining process of ion-type rare earths, based on the fact that the ion-type rare earth ore-forming area has a small terrain height difference, shallow magmatic rock basement burial, and shallow basement broken cracks development, differential weathering and other common geological characteristics, combined with the technical characteristics of in-situ leaching mining, and rationally using the advantages of geophysical exploration, hydrogeological experiments, geological drilling exploration and numerical simulation techniques to provide an ionic rare earth Comprehensive Exploration Method for Concealed Leakage Channels in Mine

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